As of October 2015, the average cost for a bidet toilet is between $400 and over $900, depending on the make and model. This includes installation costs.
Bidet toilets vary widely in cost based on the size, manufacturer and special features. An electronic bidet can cost more than $1,000 or less than a traditional bidet toilet. Another consideration is the additional costs when operating the bidet, such as how much water it consumes compared to what the previous toilet did. On the bright side, bidets save an average of $417 a year in toilet paper costs. Using warm water in the bidet often causes the operating costs to rise.